USA Materiel Command Acqiuisition Center, Yuma Proving Ground Contracts Division, ATTN: AMSSB-ACY/Bldg. 2100, Yuma, AZ 85365-9106

66 -- SHOCK/VIBRATION DATA ACQUISITION SYSTEM POC Mr. Randy Patrick, (520) 328-7556 WEB: Notices, http://www.yuma.army.mil/contracting/notices.html. E-MAIL: Randy.Patrick@yuma-exch1.army.mil, Randy.Patrick@yuma-exch1.army.mil. Yuma Proving Ground is searching for sources who have the potential of delivering a data acquisition and analysis system for gunfire shock and general vibration data. The system hardware and software must be commercially available and meet the stated performance requirements with minimal modifications. The acquisition system shall provide all required hardware/software, data archive media, and monitor; see signal conditioning "Option 1" paragraph. A parallel port HP laserjet printer will be supplied for the system. The system shall be Ethernet TCP/IP compatible. Computer Platform -- The desired platform is a Pentium CPU based computer with Microsoft Windows operating system. Calibration -- The system shall provide capability for AC or DC least squares fit calibration using an analog input signal of known engineering rms or DC level. The calibration routine shall include automatic and user manual correction of DC offset levels and engineering calibration factor. Input signal gain and polarity shall be user definable. Digitization -- System transient shock analog signal data acquisition capabilities shall be a minimum of 32 simultaneous input data channels,16 Bit A/D, and flat DC to 20 KHz bandwidth for a 5 second time history. An acquisition bandwidth of DC to 100 KHz is desirable and proposals should address maximum available bandwidths and time buffer lengths for all channels, or a fraction of the total input channels. For continuous vibration the required acquisition bandwidth is 2000 Hz with 30 second duration. Time history digitization peak error at the maximum frequency shall be less than 5%. Phase error between all channels shall be less than 1%. The system hardware/software shall be expandable to a minimum of 64 channels. System shall provide user selectable trigger channel, level, +/- buffer delay, and slope. Typical A/D input signal level is +/- 5 volt peak. System anti-aliasing filter cut off frequency shall be user defined and switchable between three modes: no filter, linear phase, and flat frequency filter. Data Display The system shall provide a flexible display of acquired data for preliminary evaluation and final data processing. Real time processing is not required, however a rapid data acquisition and post analysis transfer rate is needed. The system shall provide a minimum sixteen channel strip chart format of acquired data channels, with amplitude autoscaling, time history peak information, and over-range or A/D range checking. The software shall permit user definition and storage of plot formats, overplotting of multiple processed data channels, such as FFT and SRS, and plot annotation. The software shall permit user definition of macro routines for data processing and plot spooling. The proposed system shall permit user definition of calibration, raw data, and processed data file names. Analysis Software The data digitization and processing software shall be a single integrated software package to permit standardized data plotting, and file transfer between the data acquisition and processing applications. Multiple definition of data channel, header information, file names, file formats, etc. between software modules or packages shall not be required. The system shall provide comprehensive software modules for data acquisition, time history evaluation, spectral analysis, and modal analysis. Minimum required time history capabilities include statistical analysis, math functions, data editing, digital filtering, and decimation. Minimum spectral functions required are Correlation, Shock response Spectrum, FFT, peak hold and average Acceleration Spectral Density, and Energy Spectral Density with user definable window functions, and calculation parameters. The system shall permit storage of time history, and processed spectral data in ASCII, UFF, and binary file formats and the import of ASCII files. Digital interfaces formats for import of data from a Metum RSR 512 digital tape recorder or Optim Megadac 6510 data acquisition system would also be a beneficial option. Option 1 Signal Conditioning Typical USAYPG shock & vibration data acquisition projects use piezoresistive, charge, and less frequently constant current accelerometers. The proposed system may provide an option for integrated signal conditioning hardware and control software for bridge, charge, and constant current type accelerometers. Proposed signal conditioning performance shall meet above frequency bandwidths and provide computer-controlled operation. Alternatively, an IEEE 488 interface can be developed for existing government supplied Endevco model 4430A signal-conditioning amplifiers. If you believe that you can meet the above requirements, please provide information on your equipment and your best estimate of cost prior to January 31, 2000. This is not a solicitation for bids. We are currently looking for potential sources. Submit your information to Commander, ATTN: CSTE-DTC-YP-MT-RS-M/Patrick, Yuma Proving Ground, AZ 85365. Questions can be directed to Mr. Patrick at (520) 328-7556. Posted 12/09/99 (W-SN407473). (0343)

Loren Data Corp. http://www.ld.com (SYN# 0248 19991213\66-0010.SOL)